Windows 10: USB HDD Not Showing Up?

Hey guys, I've got 4 external USB HDD's connected to my PC. 3 of them are working fine, however the 4th isn't showing up.

It shows up when I right click the USB icon in the bottom right corner of my screen and its name is "My Book" but it doesn't have a drive letter like the other USB HDD's.

Thank you for any help!

:)

 

additional harddisc drive

no its a HDD USB it sounds as though its connecting to the computer but doesn't show up in This PC

Regards

Keith

 

Tried to read data from a SATA HD via USB - my windows disk from my previous laptop

Hi Greg

I never get the option of de-installing the driver....

Right clicking the unit and then selecting the DISKDRIVE shows

"Ext. HDD".

I click on the hardware Tab and it shows two functions

Innostor Ext HDD USB Device, type Diskdrive

USB Storage Unit - Type USB Controller

Clicking on properties on either of the two and selecting "Driver" only allow me

Neither of these allow me to any View Driver Details - all other options are not available.

Both the USB controller and the Diskdrive btw show the "mismatch error".

Br

Lars

 

Go-to disk Management and give it a drive letter it should then show up

 

To add to what Samuria is saying, go to Start/Search and type diskmgmt.msc, Right click the diskmgmt results and Run As Administrator. In the Elevated Disk Management window, in the lower pane, find your My Book external HDD, Right click it and choose Change Drive Letter or Paths. Choose a drive letter not being used.

 

I had to put this USB hard drive away, but I'm going to try your idea now.

By the way, if your idea doesn't work what else can I try?

Thanks!

 

I'm still unable to access this USB HDD.

Does anyone have another idea?

Thanks!

EDIT:
The USB HDD is plugged in, but it's not showing up in Disk Management...?

 

You have to eliminate the usb, usbcable and usb interface and put it in the pc if that doesnt see it in the bios its dead

 

Have you checked it on another working PC?

 

Try this

• Open an admin Command Prompt window
• Enter DISKPART
• Enter AUTOMOUNT ENABLE
• Enter EXIT

The reboot, reconnect the drive and see if it is recognised.

 

Okay thanks, but could you explain what this will do and how it works?

 

automount Command : Enables or disables the automount feature. When enabled (the default), Windows automatically mounts the file system for a new basic or dynamic volume when it is added to the system, and then assigns a drive letter to the volume.

As it says, by default automount is enabled in Windows.

When none of your USB storage devices ( external HDDs, Flash drives) show up in Windows Disk Management (this can happen sometimes) , then we recommend to check whether automount got disabled - somehow. If disabled you have to enable it.

( If only one of your external storage device does not show up but others show up with drive letters, there is no need to check automount. That means there is a problem with that storage device. Just to confirm I wanted you to check it on another PC.)

Actually Steve C should have recommended this:

Start > All Programs > Accessories > Right click on Command Prompt and Run as administrator.
Then
diskpart [ENTER]
Against the DISKPART prompt
automount [ENTER]
Does it say "automatic mounting of new volumes disabled " ? Then
automount enable [ENTER]
"automatic mounting of new volumes enabled"
Close Command Window.
If "automount" command says ""automatic mounting of new volumes enabled" then there is no need to give the "automount enable" command.

Since you said that three of your external drives are working fine, the above exercise is redundant , but no harm. Sometimes redundancy does help.

For more insight see this thread where it helped the OP: New Drives Plugged in New Notebook Need to Have Drive Letter Assigned https://www.sevenforums.com/hardware...-assigned.html

 

I don't agree. I once had one external drive not appearing and automount enable fixed the problem.

 

You may disagree, it is your pleasure.

Automount is a generic command. It either enables mounting of all USB storage devices or disables mounting of all USB storage devices

There is no way one can mount enable or mount disable a specific USB storage device.

https://technet.microsoft.com/en-us/...(v=ws.11).aspx

"I once had one external drive not appearing and automount enable fixed the problem." I don't believe it. It is my pleasure *Smile.